158225723 has 4 divisors (see below), whose sum is σ = 161211168. Its totient is φ = 155240280.

The previous prime is 158225687. The next prime is 158225741. The reversal of 158225723 is 327522851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327522851 = 211 ⋅1552241.

It is a cyclic number.

It is not a de Polignac number, because 158225723 - 2¹⁶ = 158160187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158225773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1492643 + ... + 1492748.

It is an arithmetic number, because the mean of its divisors is an integer number (40302792).

Almost surely, 2^158225723 is an apocalyptic number.

158225723 is a deficient number, since it is larger than the sum of its proper divisors (2985445).

158225723 is an equidigital number, since it uses as much as digits as its factorization.

158225723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985444.

The product of its digits is 33600, while the sum is 35.

The square root of 158225723 is about 12578.7806642774. The cubic root of 158225723 is about 540.8693393080.

The spelling of 158225723 in words is "one hundred fifty-eight million, two hundred twenty-five thousand, seven hundred twenty-three".